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P2177 Diagnostic Trouble Code Discussion for April 2019

Fuel System Too Lean At Off Idle (Bank 1)

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Trouble Ticket Help Requests for DTC P2177
Help Request Posted
2006 Mazda 6 Mazdaspeed 2.3L MIL Lamp on VIN: JM1GG12L16
P2177: Fuel System Too Lean At Off Idle (Bank 1). ... p2177 p2188 present , p0303 pending. replaced front air fuel ratio sensor, mass air flow sensor and pigtail ( all dealer parts but pigtail ) that corrected the p2177 , still running rich at idle, front air fuel ratio sensor is -.150 ma rear o2 sensor i...
April 18, 2019